LX8385-xx/8385A-xx/8385B-xx

PRODUCT DA T ABOOK 1996/1997

3

Copyright © 1999

Rev. 2.0a 10/00

ELECTRICAL CHARACTERISTICS

(Unless otherwise specified, these specifications apply over the operating ambient temperatures for the LX8385-xxC/85A/85B-xxC with 0°C

≤ T

125°C and the LX8385-xxI with -25°C

≤ T

Low duty cycle pulse testing techniques are used which maintains

junction and case temperatures equal to the ambient temperature.)

Parameter

Symbol

Test Conditions

Units

LX8385/85A/85B-00

Min.

Typ.

Max.

Reference Voltage

LX8385-00

V

REF

I

T

(Note 4)

10mA

≤ I

LX8385A/85B-00

I

T

10mA

≤ I

Line Regulation (Note 2)

∆V

1.5V

≤ (V

7V, I

Load Regulation (Note 2)

∆V

V

Thermal Regulation

∆V

T

Ripple Rejection (Note 3)

V

5V, f =120Hz, C

Tantalum, V

C

Adjust Pin Current

I

ADJ

Adjust Pin Current Change (Note 4)

∆ I

ADJ

10mA

≤ I

Dropout Voltage

LX8385-00

∆ V

∆V

LX8385A/85B-00

∆V

Minimum Load Current

I

OUT (MIN)

V

Maximum Output Current

I

OUT (MAX)

(V

Temperature Stability (Note 3)

∆V

Long Term Stability (Note 3)

∆V

T

RMS Output Noise (% of V

V

OUT (RMS)

T

1.238

1.250

1.262

V

1.225

1.250

1.270

V

1.240

1.250

1.260

V

1.238

1.250

1.262

V

0.015

0.2

%

0.2

0.5

%

0.01

0.04

%/W

65

83

dB

55

100

µA

0.2

5

µA

1.2

1.5

V

1.1

1.3

V

210

mA

3

3.5

A

0.25

%

0.3

1

%

0.003

%

Parameter

Symbol

Test Conditions

Units

LX8385/85A/85B-33

Min.

Typ.

Max.

Output Voltage

LX8385-33

V

OUT

V

(Note 4)

4.75V

≤ V

10V, 0mA

≤ I

LX8385A/85B-33

V

4.75V

≤ V

10V, 0mA

≤ I

Line Regulation (Note 2)

∆V

OUT

4.75V

≤ V

(V

4.75V

≤ V

Load Regulation (Note 2)

∆V

V

Thermal Regulation

∆V

T

Ripple Rejection (Note 3)

C

Quiescent Current

I

Q

0mA

≤ I

Dropout Voltage

LX8385-33

∆V

∆V

LX8385A/85B-33

∆V

Maximum Output Current

I

OUT (MAX)

V

Temperature Stability (Note 3)

∆V

Long Term Stability (Note 3)

∆V

T

RMS Output Noise (% of V

V

OUT (RMS)

T

3.267

3.3

3.333

V

3.235

3.3

3.365

V

3.274

3.3

3.326

V

3.267

3.3

3.333

V

16

mV

210

mV

515

mV

0.01

0.02

% / W

60

83

dB

410

mA

1.2

1.5

V

1.1

1.3

V

3

3.5

A

0.25

%

0.3

1

%

0.003

%

Note 2. Regulation is measured at constant junction temperature, using pulse testing with a low duty cycle. Changes in output voltage due to

heating effects are covered under the specification for thermal regulation.

Note 3. These parameters, although guaranteed, are not tested in production.

Note 4. See Maximum Output Current Section above.

LX8385-00/85A/85B-00 (Adjustable)

LX8385-33/85A-33/85B-33 (3.3V Fixed)